| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a system and method for detection of a surge precursor in a compressor and its protection by measuring power change near a blade passing frequency. <P>SOLUTION: The method is for monitoring the compressor (100). The method may include: a step of determining the blade passing frequency; a step of determining a power indication for a number of frequencies above and below the blade passing frequency; a step of determining a ratio between a maximum power indication and a minimum power indication for the frequencies for a number of predetermined time intervals; and a step of analyzing the ratio for each predetermined time interval to predict a surge condition (330) of the compressor (100). <P>COPYRIGHT: (C)2012,JPO&INPIT |
